Broadband CPW-Fed Circularly Polarized Square Slot Antenna With Inverted-L Strips for UWB Applications

Pourahmadazar, Javad; Ghobadi, Ch.; Nourinia, Javad; Felegari, Nader; Shirzad, Hamed

doi:10.1109/lawp.2011.2147271

Cited by 155 publications

(118 citation statements)

References 11 publications

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“…Circularly polarized mode can be realized by various antenna types, such as slot antenna [1][2][3][4][5][6][7][8], coplanar waveguide model [9], and dielectric resonator antenna [10]. Among these antennas, slot antenna has attracted much attention due to the advantagious features of simple structure, wide band, and easy integration.…”

Section: Introductionmentioning

confidence: 99%

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A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

Wu¹,

Wei²,

Li³

et al. 2018

PIER Letters

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Abstract-This communication presents a novel compact and wideband circularly polarized (CP) slot antenna fed by microstrip feedline. The proposed antenna consists of a corner-truncated square-ring slot patch and a novel bent strip. The CP radiation is formed by using the bent strip to excite CP resonance modes. By intruding several open stubs to the corners of the square-ring slot patch, the impedance matching and axial ratio (AR) bandwidth are improved. The measured results show that the proposed antenna has the advantage of wideband characteristics in terms of an impedance bandwidth of 90.59% (3.2-8.5 GHz) and 3-dB axial ratio bandwidth of 84.2% (3.3-8.1 GHz). The principle as well as simulated and measured results of the proposed antenna is revealed.

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Section: Introductionmentioning

confidence: 99%

“…Using an additional open-circuited stub near the feeding port can broaden the impedance bandwidth. Table 1 manifests the performances of the proposed antenna and the antennas in [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

Wu¹,

Wei²,

Li³

et al. 2018

PIER Letters

View full text Add to dashboard Cite

show abstract

“…Microstrip CP antenna arrays have become an excellent choice due to their simple structures, low profile, ease of fabrication and good performance [3][4][5][6][7][8][9][10][11][12][13]. Most designs have narrow impedance and axial ratio (AR) bandwidth [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…In the past few years, the designs of coplanar waveguide (CPW)-fed square slot antennas are getting more attention owing to their wide bandwidth [4][5][6][7][8][9][10][11][12][13]. Various effective techniques used to expand the CP bandwidth of slot antennas have been introduced as follows: inserting inverted-L or T-shaped grounded strips in the slot [7][8][9][10]13], embedding a lighting-shaped feed line [9], implanting a spiral slot in ground plane [11], and employing arc-shaped grounded metallic strips [12].…”

Section: Introductionmentioning

confidence: 99%

Broadband Circularly Polarized Slot Antenna Array With Fan-Shaped Feed Line and L-Shaped Grounded Strips

Yan²,

Zhang³

et al. 2014

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Abstract-A broadband circularly polarized (CP) slot antenna array fed by a coplanar waveguide (CPW) is proposed. A fan-shaped feed line and three L-shaped grounded strips are embedded in the square slot antenna element to enlarge the bandwidth. Simulated results show that the antenna element can obtain a wide impedance bandwidth with −10 dB reflection coefficient covering 1.7-6.3 GHz (about 115% relative bandwidth) and 3 dB axial ratio (AR) bandwidth covering 2.6-5.2 GHz (about 66%). Using four elements with sequential phase feed, the measured impedance bandwidth and axial ratio bandwidth of the antenna array can be enhanced to 105% (1.65-5.35 GHz) and 71.3% (2.3-4.85 GHz), respectively. Good radiation characteristics with the peak gain of 10.8 dBic over the operating band can be obtained.

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“…Patch, microstrip and slot antennas due to their compatibility with integrated circuit systems are also widely used in CP structures [2,3,6,8,12,13]. The antennas proposed in [14,17] have investigated upon embedding two inverted-L grounded strips around two opposite corners of the slot, each of which using different feedline shapes. Embedding two spiral slots is also presented in [15], in which current circulation in the spiral slots are employed to achieve the CP operation.…”

Section: Introductionmentioning

confidence: 99%

A New Triple Band Circularly Polarized Square Slot Antenna Design With Crooked T and F-Shape Strips for Wireless Applications

Rezaeieh¹,

Kartal²

2011

PIER

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Abstract-A new design for circularly polarized square slot antenna (CPSSA) is presented. The circular polarization operation in the proposed single-layer antenna is created through two equal sized crooked T-shape and an F-shape strips located on the patch. Compared to most of the previously reported CPSSA structures, the impedance bandwidth and the axial ratio bandwidth of the antenna are increased and also the size of the antenna becomes smaller. The presented CPSSA design has the compact dimensions of 40 × 40 × 0.8 mm 3 , total impedance matching bandwidth of 8.04 GHz and exhibiting a 28.03% (4.6-6.1 GHz) 3 dB axial ratio bandwidth. A prototype of the antenna is fabricated and tested, and a great agreement with simulated results is obtained.

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Broadband CPW-Fed Circularly Polarized Square Slot Antenna With Inverted-L Strips for UWB Applications

Cited by 155 publications

References 11 publications

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

Broadband Circularly Polarized Slot Antenna Array With Fan-Shaped Feed Line and L-Shaped Grounded Strips

A New Triple Band Circularly Polarized Square Slot Antenna Design With Crooked T and F-Shape Strips for Wireless Applications

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